Xwilliam a asa hodaius



lg- 9, 1932- w. A; HoDGlNs 1,871,322

HEAT SAVER Filed- Jan. 16, 1950 Patented Aug. 9, 1932 UNITED STATES HEAT SAVER Y i Application led January 16, 1930. SerialNo. 421,1972".

This invention relates to a heat saver and more particularly to a means for utilizing the heat which still remains in the hot products of combustion after the same has passed around the various heating chambers of a furnace or other heating unit.

In many of the furnaces and heating units, there is not sufficient radiation surface over which the products of combustion pass to permit utilization of the heat value, especially in heating units in which there is a forced draft. Thus, considerable of the heat value passes ofi1 through the chimney. With the object in view of utilizing the heat which still remains in the hot products of combustion after they have passed around the various heat chambers, I provide the heat saver hereinafter disclosed, which is a separate unit through which the hot products of combustion are directed and further heat value radiated therefrom before passing into the chimney.

With the foregoing and other objects in View as will appear as the description proceeds, the invention consists of the novel construction, combination and arrangement of co-operating elements as hereinafter more specifically set forth, claimed and shown in the accompanying drawing forming a part of this application.

The drawing illustrates a perspective side View of the preferred embodiment of my invention, parts being broken away to more clearly'illustrate the interior detail.

l is a heat radiator, which radiator is a hollow, cylindrical casing formed of an outer cylindrical wall 2, an inner cylindrical wall 3, a top capping 4; and a bottom capping 5. The interconnecting edges between the respective cappings 4 5 and the cylindrical walls 2 and 3 may be seamed, fused, riveted or in any other way connected to make an air-tight joint. The interior between the cylindrical walls 2 and 3 is provided with a spirally formed baflie plate 6, which forms a spiral iue through which the hot products of combustion are carried during their travel from the smoke pipe to thechimney. The smoke pipe 7 from the furnace is connected in an opening in the side of the outer wall 2 adj a- ATENI CF1-#ICB cent to theupper end of theradiator, while the smoke pipe 8 is connected "in c an opening in the side of the outer wall 2 adjacent to 'the'lower end of the heat radiator.

If desired, an upright partition wall 9- may be positioned at the upper end of the bafie plate 6, as a closure between the outer wall 2, the inner wall?) and the capping 4. In a similar manner, if desired, a partiti positioned at the plate 6.

on l() may be lower end of the baiiie l1 is an outer casing provided with a top capping l2. This capping has a registering opening through which the smoke pipe 7 eX- tends through jacent the lower end of the ca and another registering opening which the smoke pipe 8 extends. Ad-

sing l1, I provide an opening to which one end of the air inlet pipe 14 is connected. The o ther end of the air inlet pipe leads from a cold air register or plpes connected is provided with one or 15, which will lead to into any desired part of the heated.

The outer casing 11 is prefe thereto. The capping Y12 more warm-air pipes and have an outlet building being rably provided with a reinforcing ring 16 around its lower end. base capping, but preferably If desired the casing 1l may have a it is seated directly upon the floor. The heat radiator l is supported on a sired position relative to the so as to provide heating space around and above the heat plurality of legs 17 in the deouter casing 1l, below, through, radiator l, the

direction of air flow being indicated by the arrows in full lines, the direc the hot products of by the arrows in dotted lines.

tion of flow of combustion being shown When the heat saver is properly connected up and in operation, the exhaust products of combustion will be delivered by the smoke pipe 7 from the furnace into the heat radiator l and spirally conveyed downwardly to the smoke pipe 8 leading to the ch it is being spirally conveyed, i tarded in contact relationship inner faces of the side walls 2 permit the imney. When t is slightly rewith the entire and 3, so as to greatest possibleheat radiation to the warming chamber between the lheat radiator l and the outer casing 11.

The foregoing specification and annexed drawing disclose the preferred embodiment of my invention, but it is to be understood that minor changes may be resorted to in the 5 commercial adaptation of my invention Without departing from the scope of the invention as hereinafter claimed.

What I claim as'new is.; A e* A heat saver comprising a heat radiator lo unit, composed of inner and outer tubular Walls; a spiral lueformed'iriterrnediatesaid Walls and end closure caps for the opposite ends of said flue; an outer casing enclosing said unit; means for supporting said unit inl said casing and in entire spaced relation therefrom an-intak'erpipe, for vthe-,hot :products of: combustion,communicating With one end of said ilue g an outlet pipe communieatf ing with the opposite end of .said'iiue and E0 Warm air ducts extending from said easingz In testimony whereof, I aliix my signature.

WILLIAM ASAKHODGINS 

